Match-plate for molders&#39; flasks.



E. T. MOHUGH. MATCH PLATE FOB. MOLDERS FLASKS. I APPLICATION FILED NOV. 28, 190B.

927,999, Patented July 13, 1909.

WJTNESSES: j

NVEIVTOR.

yfmf i A TTORNEY..

EDWARD T. MCHUGH, OF HOLYOKE, MASSACHUSETTS.

MATCH-PLATE FOR MOLDERS FLASKS.

Specification of LettersPatent. i

Patented July 13, 1909.

Application led November 28, 1908. Serial No. 464,913.

To all'whom it may concern:

Be it known that I, EDWARD T. MCI-IUGH,

a citizen of the United States of America,

and resident of Holyoke, in the county of Hampden and State of Massachusetts, have invented certain new and useful Improvements in Match-.Plates for Molders Flasks, of which the following is a full, clear, and exact description.

This invention relates to match-plates for use in conjunction with molders7 flasks, a principal object being to provide in a pattern carrying match-plate a practical means for rigidly securing the same in its proper position between the cope and `nowel parts of a fiask during the operation of ramming the sand therein to make a mold, together with means for freeing the said match-plate fastenings relatively to the flask to permit in the usual rapping of the match-plate a slight limited movement thereof in all directions for a loosening of the patterns in the surrounding sand previous to drawing the patterns therefrom, and to also provide means for restoring the match-plate again to its locked and alined or given set position in the fiask in an accurate manner for successive mold-making operations.

The invention consists in the combination or arrangement of parts, and the constructions of certain of the parts all substantiall as hereinafter described in conjunction with the accompanying drawings and as set forth in the claims.

In the drawings z-Figure 1 is a lon itudinal sectional view of a sand-filled ask, showing the pattern-carrying match-plate, and locks therefor in position therewithin, the guide-pins of the flask being shown in full lines. Fig. 2 is an end elevation of a portion of a match-plate, the lock therefor being shown in engagement with the middle portion of the flask guide-pin; Fig. 3 is a longitudinal sectional view of an end portion of a match-plate showing the lock therefor in engagement with a portion of a flask guide-pin; Fig. 4 is a plan view, partly in section, of a portion of a matchplate and lock therefor, the lock being shown as in close engagement with the fiask guide-pin, and Fig. 5 is a similar view to Fig.` 4, but showing the match-plate lock as freed from close engagement with the guide-pin.

In the drawings, A is a match-plate of wood or metal of sufficient thickness to resist anytendency to warp from a perfectly flat i form, as the upper and lower faces of the plate must be perfectly level to receive thereon the divided pattern or patterns a, each half of which is secured to the upper and lower face of the plate A respectively, in positions thereon directly opposite each other. The plate A which is rectangular in form, is of such size as to conform to the outside dimensions of the walls of the flask B with which it is to be used.

The flask B as shown in Fig. 1, is an ordinary two-part flask comprising the cope Z) and the nowel or drag c. Vhen the flask B is united, as shown in Fig. 1, with the match-plate A and its patterns a in position therebetween, or when the mold is completed and the match-plate A removed, the several parts of the flask A are held in registering positions one above the other by the guide pins 12,-engaging through the guide straps 13. The guide straps 13 are centrally secured on end walls of the cope b by the attachment lugs 11, and the downwardly eX- tending bolts or pins 12 are triangular in cross section, as shown in Figs. 4 and 5, and extend downward to a point opposite the central portion of the end walls of the nowel c where they pass through the triangular shaped opening in the guide straps 13 and have close guiding engagements.

The match-plate A has provided on both ends thereof the centrally located outwardly projecting and vertically apertured guide frames D which comprise each the anodeplate inner edge portion 20, the under face of which is perforated for the attaching screws 21 which firmly hold the frames I) in the recessed edge portion of the plate, as shown in Fig. 1.

The outwardly projecting substantially triangular portion of the frame as best seen in Figs. 4 and 5 surrounds a central triangular shaped opening 23 having opposite open extensions 23a within which a V-shaped follower-bar or shoe-plate 24 is supported and whose central portion has the same angularity as that of the guide-pins 12. The slice-plate 24 is formed with opposite end extensions 25 loosely accommodated in the extension openings 23a, which are provided with horizontal outwardly opening sockets 26 which receive the reduced end portions of the screws 27, the threaded portions of which have screw engagements through the side extensions 28 of the frames D, which form the outer walls of the openings 23a.

The apex portion of earch V-shaped shoe- Y plate 24 has an abutment boss or reinforcement 29 against which engages al thumb screw 30, having thread-engagement through the central portion of thc frame D, and its movement in. regulated extent islimited by the kiiurled stop nut 33, which may be adjusted by turning either toward the head or the inner end of the screw and when adjusted, confined by the locking screw 34, as shown in Fig. 5.

In theutilizationof this match plate when the same is placed between the twoportions of the flaslgwith the flask guiding pins extendingthrough the triangular opening in the opposite-edgewise projected. framesD D, the screws` 30 30 are turned inwardly to force the shoe plates to close, though not binding, engagementsv with the guide pins 12. The sand is theniammed in the mold in the usual way and then in order to loosen the patterns the sc i'ews 30 are outwardly turned so that by rapping the match plate at any or alll of its four edges it may have a slightdegree of movement horizontally in every direction as limited along' one line by the bases of the sockets 26 contacting against the inner ends of the screw studs 27, and aloiiganother line at right angles to the limitations of the inner faces of the V-shaped shoe plate against the slant sides of the guidepins. Then before the separation of the flask portions and the taking out of the pattern carrying match plate, the screws 30, 30 are again inwardly turned as far as. permitted by the stop ends 33 to adjust the match plate to the position itoriginally occupied at thetime the sand mold was made, the patterns cairied thereby being loose and centralized in the mold cavities.

rlfhe stop ends 33 are extremely advantageous in that they assure, in the inward turning of the screws 30, 30, a like positioning of the latter at both sides of a iiask and sotliat one may not be unduly turned more than another and caused to leave the match plate in an offside position whereby in the withdrawal of the parts for opening the moldthe patterns might strike at one side of the mold cavitieswhile being very free from the other side; and the stop nuts also prevent any possibility of a tight binding of the shoe plate against the guide pins, which, as manifest, would be objectionable.

I claim w l. A match board having at its edge a frame, al shoe-plate inovably accommodated within the opening in the frame having a foi'm adapting it for engagement with a guide pin, of a flask section, means coacting between the frame and shoe plate for limiting the movement of the latter, and means appurtenant to the frame for forcing the shoe plate to a. fixed relation to the location of the guide pin.

2. A match board having at its edge an `outwardly projecting frame, a shoe plate niovably accommodated within the opening the movement ofthe latter, and means appurtenant to the frame for forcing the shoe plate to a fixed position'in relation tothe location. of the guide pin.

3. A match board havingv at its edge a frame, av shoe-plate mov-ably. accommodated within the opening in the frame having. a form adapting it for engagement with a guide piiiofav flask section, means coacting between the frameand shoe plate for limiting` the movement of the latter, and adjustable. means on the frame for forcing the shoe plate toa predetermined relation to the location ofthe guide pin.

4. A match board having at its edge an outwardly projecting` frame, a shoe plate movably accommodated within the opening in theframe having. a form adapting it for engagement with a guide pin of a flask section,- adjustable meansV coacting. between the framel and shoe plate for variably limiting the movement. of the latter in an outward direction relatively to the frame, and adjustable means. on the frame for. forcing the shoe plateinwardly in av predetermined extent.

5. A match board having a frame at its edge constructed with av substantially triangular aperture whichhasopposite extension openings, screw-engaged through the outer walls of which are studs having their extremities project-ing intoy said extension openings, a. V-shaped slioeplate having` opposite eiid=extensions provided with sockets opening toward and receiving. tlierewithin the extremities of saidfscrew studs, a. screw adjustably engaged through the apex portion of the frame and operative to impart a forcing engagement against the apex portion of the shoe plate, anda nut screw engaged. and adjustable on the last screw constituting` a means for variably limiting the inwardly forcing action of thesaid screw.

6. A match board having a frame at its edge constructed with a substantially triangular. aperture which has opposite extension openings, screw-engaged through the outer walls of which; are studs having their extremities projecting into said extension openings, a Vr-shaped shoe plate having opposite end extensionsprovided with sockets opening toward and receiving tlierewitliin the extremities of said screw studs, and a screw adjustably engaged through the apex portion of the frame and operative to iinpart a forcing engagement against the apex portion ofthe shoe plate.

7. The combination with the cope and nowelportions of a flask, one thereof having guide pins extending vertically across and I ward and receiving therewithin the said outside of the lnatching edges of the flask portions, of a match board between the flask portions having at its opposite edges a frame provided with a substantially triangular aperture with opposite extension openings, screw engaged through the outer walls of which are studs having their extremities projecting into the opposite extension openings,-the guide pins of the iiask portion eX- tending through the apertured frame, a V- shaped shoe plate having opposite end eXtensions provided with sockets opening to-l screw studs, said shoe plate being adapted by its formation to forni a guide pin, and a screw adjustably engaged through the apex portion of the frame and operative for a iorcing engagement against the apex portion of the shoe plate.

Signed by ine at Springiield.7 Mass., in presence of two subscribing witnesses.

EDWARD T. MCHUGH. lVit-nesses:

VM. S. BELLowS, Gr. R. DRIsooLL. 

